221442441423 has 8 divisors (see below), whose sum is σ = 337436101248. Its totient is φ = 126538537944.

The previous prime is 221442441397. The next prime is 221442441449. The reversal of 221442441423 is 324144244122.

It is an interprime number because it is at equal distance from previous prime (221442441397) and next prime (221442441449).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221442441423 - 2³⁷ = 84003487951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221442441463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5272439061 + ... + 5272439102.

It is an arithmetic number, because the mean of its divisors is an integer number (42179512656).

Almost surely, 2^221442441423 is an apocalyptic number.

221442441423 is a deficient number, since it is larger than the sum of its proper divisors (115993659825).

221442441423 is a wasteful number, since it uses less digits than its factorization.

221442441423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10544878173.

The product of its digits is 49152, while the sum is 33.

Adding to 221442441423 its reverse (324144244122), we get a palindrome (545586685545).

The spelling of 221442441423 in words is "two hundred twenty-one billion, four hundred forty-two million, four hundred forty-one thousand, four hundred twenty-three".